Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 1
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1 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 1
2 CAMS = Cameras for All Sky Meteor Surveillance = Professional project financed by NASA = To validate the IAU Working List of Meteor Showers = Running since November 2010 = Totals > ~ accurate meteor orbits Single CAMS = Introduced by Pete Gural in June 2011 = Used for the Draconids 2011 = Play time for amateurs during Orionids 2011 = Start of CAMS-BNL in March 2012 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 2
3 CAMS California & New Zealand Single CAMS by amateurs Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 3
4 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 4
5 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 5
6 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 6
7 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 7
8 CAMS-BNL Highlights from July 2014 till June 2015: 189 Kappa Cygnids orbits associated in 2014, did the 2007 event repeat itself? 890 Perseid orbits (Full Moon 10 August 2014) > for a later topic Any trace of the 1567 Leonids dust trail? 528 Geminids orbits > for a later topic 163 Quadrantid orbits in 2015, did we see the radiant contract? February a boring month meteor-wise? 86 Lyrids orbits in 2015 June 2015: Phi Piscids and Upsilon Andromedids orbits. Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 8
9 250 κ-cygnids For the range α [220 to 310 ] δ [+39 to +74 ] V g [12 to 34 km/s] i [16 to 46 ] ω [ ] λ ʘ [ ] At right: 189 radiant positions D-criterion < with the associated sources according to the best D SH -value Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 9
10 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 10
11 The 2007 Kappa Cygnid event re-occurred in Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 11
12 189 radiant positions for 2014 with a D SH < and the associated sources according to the best D SH -value, plotted in ecliptic coordinates relative to the groups previously described by Koseki (2014) splitted in three periods of time: at left λ ʘ < 130, in the middle 130 < λ ʘ < 145 and at right λ ʘ > 145. Based on the 131 κ-cygnid with D SH < 0.105, a radiant drift: Δα/Δλ ʘ = +0.51, Δδ/Δλ ʘ = = much more than used in the IMO Shower Cal. Koseki (2014) has Δα/Δλ ʘ = +0.60, Δδ/Δλ ʘ = (interval 120 < λ ʘ < 150 ). Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 12
13 Any trace of the 1567 Leonids dust trail? Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 13
14 Quadrantids 38 cameras on 3 4 Jan orbits, 143 Quadrantids of high quality. Max.: January 4, at 2 h UT 27 cameras on 3 4 Jan orbits, 125 Quadrantids of high quality. Max.: January 3, at 20 h UT IMO : α = 230, δ = : α = ± 1.9 and δ = ± 1.2 (CAMS) 2015: α = ± 1.7 and δ = ± 1.0 (CAMS) Compact radiant, not diffuse! Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 14
15 Quadrantids The information about a diffuse Quadrantid radiant with a very compact radiant nucleus during the peak hours appeared systematically in the IMO Shower Calendar as well as in the older Handbooks. Prentice (1940) mentions It is well known that the radiant of the quadrantid shower is exceedingly complex and apparently covers a wide area at least 20 in diameter, with center about (This was the source of the information in the IMO publications). In CAMS data we could not find any indication for a diffuse Quadrantid radiant. But the number of orbits beyond the maximum night is indeed small. Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 15
16 Oh, so boring month of February 39 Cameras active, 21 partial clear nights, 777 orbits: 10 minor showers from the IAU Working list of Meteor showers could be identified. 427 FED (Feb. η-draconids): 3 4 February 2011, CAMS in California registered 6 orbits; Nothing found with SonotaCo; Two very similar orbits by CAMS-BNL on 3-4 Feb. 2015; Nothing by CAMS California although perfect conditions; Very short duration source? California BNL-1 BNL-2 YYYYMMDD Time (UT) 18 h 15 m h 21 m H b (km) 103.6± H e (km) 95.7± α ( ) ± ± ±0.34 δ ( ) ± ± ±0.44 V g (km/s) 35.58± ± ±0.17 q (AU) 0.971± ± ± /a (AU -1 ) ± ± ± e > ± ± i ( ) 55.2± ± ±0.295 ω ( ) ± ± ±0.291 Ω ( ) ± ± ± Π ( ) ± ±0.292 Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 16
17 Oh, so boring month of February February γ-lyrids? Outburst (radio) 2015 February 5 10 h - 11 h UT. Canadian Meteor Orbit Radar: concentration at α = 285 and δ = +35. CAMS-BNL 38 cameras 4 5 Feb. 41 orbits, 5 6 Feb. 56, orbits 6 7 Feb. 116 orbits. Not any single orbit of CAMS-BNL matches the CMOR orbit. 429 ACB (α-coronae Borealids): 2015 CAMS-BNL has 4 candidate orbits begin February, 2 end of January. D-criterion confirms 4 definitely belong to this minor shower. 506 FEV (February ε-virginids): α = 201.7, δ = +10.4, V g = 63 km/s dataset CAMS-BNL has 3 orbits for this stream with a D-criterion Activity from 2015 CA40? Marco Langbroek discovered a fast moving minor planet that possibly crossed the Earth orbit some 3000 years ago. Checking for slow meteors Feb. from α = 267, δ = 68 and V g = 8.1 km/s. No meteors match orbit of this object, neither CAMS-BNL nor CAMS in California. Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 17
18 Lyrids 2015 An exceptional period with clear night allowed the CAMS-BNL network to function with up to 43 cameras during 27 nights, 11 of which were only partial clear. In total 1212 orbits were obtained this month. The Lyrid activity could be well monitored and 86 Lyrid orbits were identified with a D-criterion < Rather diffuse radiant: α = 271 ± 3 and δ = +34 ± 2 ( ). The radiant drift: Δα = and Δδ = Date λ ʘ CAMS Orbits Lyrids α ( ) δ ( ) Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 18
19 Lyrids 2015 Date λ ʘ V g q e i ω Ω All DMS Brown Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 19
20 June 2015: 372 PPS (φ Piscids) and 507 UAN (υ Andromedids) (372) PPS φ Piscids Year λ ʘ N λ ʘ α geo ( ) Δα δ geo ( ) Δδ V geo q e i ( ) ω ( ) Ω ( ) Brown PJ SonotaCo VMN CAMS 2014 CAMS (507) UAN υ Andromedids Year λ ʘ N λ ʘ α geo ( ) Δα δ geo ( ) Δδ V geo q e i ( ) ω ( ) Ω ( ) PJ PJ 2010/13 CAMS 2014 CAMS Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 20
21 Conclusions July 2014 June 2015: orbits (8355 July 2013 June 2014). 30 cameras at the beginning of this period and 45 at the end; Kappa Cygnids had a comparable enhanced activity as in 2007 Few orbits may have been obtained for the 1567 Leonid dust trail More orbits for 10 Minor Shower sources in February No indication for a diffuse Quadrantid radiant A diffuse Lyrid radiant Interesting dataset for Phi Piscids and Upsilon Andromedids Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 21
22 Acknowledgement Hans Betlem (Leiden, 371, 372, 373); Felix Bettonvil (Utrecht, 376, 377); Jean-Marie Biets (Wilderen, 381, 382); Martin Breukers (Hengelo, 320, 321, 322, 323, 324, 325, Assistant); Franky Dubois (Langemark, 386); Luc Gobin (Mechelen, 390); Robert Haas (Alphen aan de Rijn, 360, 361, 362, 363, 364, 365); Klaas Jobse (Oostkapelle, 331, 332, 337, 338); Carl Johannink (Gronau, 311, 312, 313, 314, 315, Networkcoordinator); Paul Lindsay (Lieshout, 356, 357); Koen Miskotte (Ermelo, 351, 352); Piet Neels (Ooltgenplaat, 341, 342, 343, 344); Steve Rau (Zillebeke, 385); Paul Roggemans (Mechelen, 383, 384, 388, 389); Erwin Van Ballegoij (Heesch, 347, 348). Masahiro Koseki for his assistance to compare CAMS-BNL data with his analyses. Pete Gural for having created the single CAMS software and continuous support. Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 22
23 Thanks for your attention! Questions? Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 23
24 Table 1 Comparing orbits from different sources for the Cygnid-Draconid-Complex. The CAMS-BNL dated, marked in bold, are compared with global CAMSdata, DMS data and sources described by Koseki (2014). The κ-cygnids for CAMS-BNL (*) marked in italics are all κ-cygnids, including the 40 orbits which result in a slightly better D SH value for one of the minor streams. Stream λ ʘ α δ V g q e i ω Ω N Source 184 GDR SonotaCo (2009) 184 GDR CAMS (2015) 184 GDR CAMS-BNL Group A Koseki (2014, Tab.9) 703 IOD CAMS-BNL α-lyrids Photo (Koseki, 2014) MK Koseki (1982, 2009) Group E Koseki (2014, Tab.9) 12 KCG SonotaCo (2009) 12 KCG CAMS-BNL 12 KCG DMS AUD CAMS-BNL Group B Koseki (2014, Tab.9) 12 KCG CAMS-BNL (*) Group C Koseki (2014, Tab.9) 197 AUD CAMS (2015) Group F Koseki (2014, Tab.9) MK Koseki (1982, 2009) 470 AMD CAMS (2015) Group D Koseki (2014, Tab.9) Group G Koseki (2014, Tab.9) 470 AMD CAMS-BNL ζ-draconids (P) Photo (Koseki, 2014) ζ-draconids (V) Video (Koseki, 2014) MK Koseki (1982, 2009) 703 IOD CAMS (2015) Tuesday, August 25, 2015 IMC, August 2015, Mistelbach - Austria 24
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